Lazulite

Sillimanite

Lazulite Vs Sillimanite

Lazulite

Sillimanite

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Astrology

Origin

Brazil, Southern and central Africa

USA, Madagascar, India, Sri Lanka, Burma, Australia, Italy, Brazil

Color

Blue, Green, Black

Blue, Green, Brownish, Greenish, Colorless, gray

Streak

White

For which Rashi?

Gemini, Sagittarius

Planet

Jupiter

Element of Planets

Energy

How to Wear?

Finger

Ring Metal

Deities

Not to wear with

Powers

Birthstone

Planetary

Talisman

Physical Properties

Tenacity

Tough

Solubility

Durability

Specific Gravity

3.04-3.173.20-3.26

1 7.18

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Fracture

Uneven

Splintery

Cleavage

{001} Indistinct, {???} Indistinct

{010} perfect

Mohs Hardness

5.56-7.5

2 10

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Chemical Composition

(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references

Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)

Optical Properties

Luster

Vitreous, Subadamantine, Silky

Pleochroism

Transparent crystals show a strong pleochroism: colorless light blue dark (violet) blueHerve Nicolas Lazzarelli

Colourless to pale brown to yellow

Dispersion

0.010.02

0.005 1

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Transparency

Transparent, Translucent

Refractive Index

1.604-1.6461.653-1.685

1 3.25

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Optic Character

Crystal System

monoclinic

Orthorhombic

Birefringence

0.031-0.0360.020-0.022

0 0.296

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Clarity

Transparent

Benefits

Physical

Neurological

Balances digestive system and reduces bloating

Cardiovascular

Respiratory

Excellent

Good

Reproductive

Digestive

Supports digestive health

Psychology

Clarity

Creativity

Healing

Emotional healing

Qualities Associated

Psychic Abilities

Creativity

Lazulite Vs Sillimanite Fracture

Fracture is an important parameter when you compare Lazulite and Sillimanite Physical Properties. It is necessary to understand the significance of these properties, before you compare Lazulite Vs Sillimanite fracture. Whenever a gemstone chip breaks, it leaves a characteristic line along its breakage. Such lines are known as fracture and are used to identify the gemstones in their initial stages of production when they are in the form of rough minerals. Fracture is usually described with the terms “fibrous” and “splintery” to denote a fracture that usually leaves elongated and sharp edges. Fracture observed in Lazulite is Uneven. Sillimanite fracture is Splintery.

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Lazulite Vs Sillimanite Luster

A primary knowledge about Lazulite vs Sillimanite luster is useful in apparent identifications of these gemstones. Luster is the measure of light that gets reflected when incident on a finished cut gemstone. There are two major types of lusters: Silky and Adamantine. Since luster varies between two crystals of even the same gemstone, luster is limited to basic identification criteria. Sillimanite, on other hand, exhibits Vitreous, Subadamantine and Silky luster.